mirror of
https://github.com/nitnelave/lldap.git
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71 lines
2.1 KiB
Bash
71 lines
2.1 KiB
Bash
#!/bin/bash
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# Usernames should be validated using a regular expression to be of
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# a known format. Special characters will be escaped anyway, but it is
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# generally not recommended to allow more than necessary.
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# This pattern is set by default. In your config file, you can either
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# overwrite it with a different one or use "unset USERNAME_PATTERN" to
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# disable validation completely.
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USERNAME_PATTERN='^[a-z|A-Z|0-9|_|-|.]+$'
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# When the timeout (in seconds) is exceeded (e.g. due to slow networking),
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# authentication fails.
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TIMEOUT=3
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# Log messages to stderr.
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log() {
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echo "$1" >&2
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}
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# Get server address
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if [ -z "$1" ]; then
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log "Usage: lldap-auth.sh <LLDAP server address> <Optional group to filter>"
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exit 2
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fi
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SERVER_URL="${1%/}"
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# Check username and password are present and not malformed.
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if [ -z "$username" ] || [ -z "$password" ]; then
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log "Need username and password environment variables."
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exit 2
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elif [ ! -z "$USERNAME_PATTERN" ]; then
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username_match=$(echo "$username" | sed -r "s/$USERNAME_PATTERN/x/")
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if [ "$username_match" != "x" ]; then
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log "Username '$username' has an invalid format."
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exit 2
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fi
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fi
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RESPONSE=$(curl -f -s -X POST -m "$TIMEOUT" -H "Content-type: application/json" -d '{"username":"'"$username"'","password":"'"$password"'"}' "$SERVER_URL/auth/simple/login")
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if [[ $? -ne 0 ]]; then
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log "Auth failed"
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exit 1
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fi
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TOKEN=$(jq -e -r .token <<< $RESPONSE)
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if [[ $? -ne 0 ]]; then
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log "Failed to parse token"
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exit 1
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fi
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RESPONSE=$(curl -f -s -m "$TIMEOUT" -H "Content-type: application/json" -H "Authorization: Bearer ${TOKEN}" -d '{"variables":{"id":"'"$username"'"},"query":"query($id:String!){user(userId:$id){displayName groups{displayName}}}"}' "$SERVER_URL/api/graphql")
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if [[ $? -ne 0 ]]; then
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log "Failed to get user"
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exit 1
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fi
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USER_JSON=$(jq -e .data.user <<< $RESPONSE)
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if [[ $? -ne 0 ]]; then
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log "Failed to parse user json"
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exit 1
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fi
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if [[ ! -z "$2" ]] && ! jq -e '.groups|map(.displayName)|index("'"$2"'")' <<< $USER_JSON > /dev/null 2>&1; then
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log "User is not in group '$2'"
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exit 1
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fi
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DISPLAY_NAME=$(jq -r .displayName <<< $USER_JSON)
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[[ ! -z "$DISPLAY_NAME" ]] && echo "name = $DISPLAY_NAME"
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